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Duri油田最近引进了一种时间推移地震监测技术,以加强储层管理,这样可以直接对储层中蒸汽在水平及垂向上的实时分布变化进行成像。该技术就是重复进行三维地震勘探采集,测量出由于注汽使油层声学性质发生变化的情况。然后对得到的地震成像结果进行处理,提取参数,即可转化为相应的工程参数。本例是在蒸汽注入的早期阶段对蒸汽流动层的地震反射异常响应进行描述,从而对蒸汽的流动情况进行监测。利用多元统计分析及成像处理技术把地震反射系数资料与井孔信息结合起来进行分析,对流动单元层的蒸汽驱动波及状况进行了成像。成像结果揭示了蒸汽的流动特性,并用于设计研究区的波及改善方案。
Recently, Duri Field introduced a time-lapse seismic monitoring technique to enhance reservoir management, allowing direct imaging of real-time horizontal and vertical distribution of steam in the reservoir. The technique is to repeat the three-dimensional seismic exploration acquisition, measuring the acoustic properties of the reservoir as a result of steam injection changes. Then the obtained seismic imaging results are processed and the parameters extracted, which can be converted into the corresponding engineering parameters. This example describes the seismic reflection anomalous response of the steam fluidized bed in the early stages of steam injection to monitor the flow of steam. Using multivariate statistical analysis and imaging processing techniques, seismic reflection coefficient data and borehole information are combined to analyze and analyze the vapor driving wave conditions of the flow cell layer. The results of the imaging revealed the flow characteristics of the steam and were used in the design of the wave propagation improvement program in the study area.